AeroShell 41 Hydraulic Fluid Is Available at Aircraft SpruceAeroShell 41 fluid is mineral oil-based "super-clean" hydraulic fluid for use with brake and hydraulic systems with synthetic rubber seals. AeroShell 41 has greatly improved fire-resistance characteristics and excellent low-temperature properties, along with good oxidation and thermal stability. Reduced pricing is available for large volume orders. For more information, call 1 (877) 4-SPRUCE and reference AeroShell 41 or visit AircraftSpruce.com.